Electric-light fixture



' Oct. 11,1927. 1 ;'644,926

, G. B. KURTZON ELECTRICLIGHT FIXTURE Original Filed May 27. 1926Patented Oct. 11, 1927.

GEORGE B. KUBTZON, OF CHICAGO, ILLINOIS.

ELECTRIGLIGI-I'l FIXTURE.

Application filed ,May 27, 1926, Serial No. 111,916 Bcnewed June 22,1927,

My present invention has to .do with improvements in electric lightfixtures and relates particularly to that variety of fixture whichcomprises not only a socket for the bulb and a support for the socket,butalso a refiector and a casing which contains the elements aboveenumerated, and also functions as a conduit to receive and, contain theconductors for supplying the bulb with the necessary power. Suchfixtures are usually employed for illuminating showcases, cabinets andother like places where the room available for installation isrestricted, and it is desired to direct as much as possible of the lightproduced in a definite direction and throughout a restricted space.My'particular objects have been not only to produce a simple andeffective structure of the kind mentioned, which can be economicallymanufactured and marketed at an attractive price, but also to producesuch a structure in which the reflector may be removed and replaced forcleaning or replacement without disassemblingthe structure or disturbingthe other elements, and also to provide support for the elongated bulbemployed in such structures in addition to and remote from the supportafforded by the bulb socket. The reasons that render these pan ticularfeatures desirable are,-first, that the efiectiveness of such a fixturedepends to a large extent upon the condition of the re fiector whichshould be capable of easy removal and thorough cleaning, and, second,the long bulbs and long filaments used in such fixtures unless supportedat their remote ends, as well as their bases, are subject to vibrationwhich considerably reduces the life of the filaments.

I attain the foregoing objects by means of the structure illustrated inthe acco1npanying drawing, in which g. 1 is an elevation or view lookinginto the opening or fenestra of the fixture;

Fi 2 a similar view as that shown in 1 of xactly the reverse or back ofthe Fig. 3 is a longitudinal central section on line 33 of Fig. 1;

Fig 4 is a transverse section on line l4 of Fig. 1, and

Fig. 5 is an end view of the structure.

Similar reference characters refer to similar parts throughout theseveral views.

The casing or body of the fixture upon and within which the other partsare mounted consists of an elongated rectangular blank of sheet metal10, of requisite thickness rolled or formed transversely so as to, havepreferably a parabolic cross-section. It will be noted that this casingis deeper than the reflector. hereafter to be described, so as to bespaced therefrom except at the outer and forward edges of these parts,to permit ventilation and dispersion of heat, and also to receive theconductor wires. The longitudinal edges of the casing are turned or bentinwardly and. back upon the blank, or seamed as at 11 and 12. The endsof the casing are closed by end pieces comprising spaced plates, 13,connected at their forward edges by a web, 14, the central por tion ofwhich is ordinarily out out, as at 15, and the ends of which areslightly extended beyond the plates 13 and bent forwardly to enter theseams 11 and 12, which seams are then pressed down tightly at the placeswhere the ends of the webs 14 enter them, thereby effectively retainingthe ends of the casing in position without solder or other mechanicalexpedient. If desired, the ends may be further strengthened and finishedby screwing to the web 14: a cover plate, 16, the ends of which extendup and over the seams 11 and 12. The outer plate 18 at one end of thecasing is perforated for the passage of the conductors, 17, and toreceive the end of the conduit, 18. The inner plate 13 at the oppositeend of the casing is also perforated for the passage of the conduits andto receive a nipple, 19, upon which the bulb socket, 20, is'inounted.

If desired, a piece of metal, 21, of inverted U-shaped section may beextended between and secured to the inner plates 13 at the respectiveends to receive and more perfectly conduit and protect the conductorwires.

One of the seams, say 12, between the end closures, is left open toreceive a forward edge 22 of the reflector, 23, the opposite edge 24 ofwhich is seamed outwardly and flat for finish and stiffening. The seam11 of the casing is also close or flattened throughout its entireextent.

The reflector, 23, may be of any desired conformation. I have shown apolygonal conformation which serves very well but which shape is notessential to the practice of my invention. As will be seen the reflectormay readily rotate either into or out of assembly with the casingwithout disturbing the assembly of any of the parts heretoforedescribed.

About one quarter of the length of the reflector from the endoppositethe location of the socket 520 I secure thereto by means of a rivet, 25,the light spring clip,

26, for engaging and holding against vibration the outer or remote endof the electric light bulb, 27. lhe reflector is held in assembly Withthe casing by 'means of the slide plates or latches, 28, provided Withslots, 29, for the passage of headed screws, 30, passing through boresprovided in the cover plates, 16, and, screwing into tapped openings inthe Webs, 14.

Having described my invention, What I claim as new and desire to secureby Letters Patent is:*

'1. An electric light fixture comprising a casing having a fenestra anddouble spaced Wallend closures, a bulb receiving socket mounted upon aninner Wall of one of said out of said casing about'said socket andspaced from said casing except at the respective longitudinal edges ofsaid casing and reflector, and releasable means for securing saidreflector in assembly With said casing.

2. An electric light fixture-comprising a casing having a fenestra anddouble spaced Wall end closures, a bulb receiving socket mounted upon aninner Wall of one of said end closures, a reflector rotatable into andout of saidcasing about said socket and spaced from said casing exceptat the respective longitudinal edges of said casing and reflector, aspring clip secured transversely of said reflector opposite the locationof said socket, and releasable means for securing said reflector inassembly with said casing.

GEORGE E. KURTZON.

